Thermodynamic properties of n-alkoxyethanols+organic solvents mixtures: VIII. Liquid–liquid equilibria of systems containing 2-methoxyethanol and alkanes (C6H12 and CH3–(CH2)u–CH3, u=3,4,6,8)

Liquid–liquid equilibria (LLE) data are reported for 2-methoxyethanol+n-pentane, +n-hexane, +n-octane, +n-decane, or +cyclohexane mixtures at atmospheric pressure, between 281 K and the upper critical solutions temperatures (UCST). The coexistence curves were determined visually. These curves are rather symmetrical, with the asymmetry increasing with the size of the n-alkane. The UCSTs increase almost linearly with the number of the carbon atoms of the n-alkane. The system with cyclohexane shows the lower UCST. The (x,T) data were fitted to the equation T=Tc+k|y−yc|m where y=γx1/{1+x1(γ−1)} and yc=γx1c/{1+x1c(γ−1)}. Tc and x1c are the coordinates of the critical points fitted together with k, m and γ using a Marquardt algorithm. The critical exponents of the order parameter for the mixtures studied are calculated. Its mean value is 0.363.